C :

#include<stdio.h>
int main()
  {
  int a,b,c,q,w,i,z;
  scanf("%d",&a);
  while(a--)
    {
  scanf("%d",&b);
   if(b%2==0) b--;
 if(b%2!=0)b=b;
   c=b/2;
    q=c+1;w=q*q;
    printf("%d\n",w);

  }

  }

C++ :

#include <iostream>
#include <cstring>
#include <fstream>
using namespace std;
int main()
{
    //ifstream cin;
    //ofstream cout;
    //cin.open("a.in");
    //cout.open("a.out");
    int testcase;
    cin>>testcase;
    while(testcase--)
    {
        int result=0,tar;
        cin>>tar;
        for(int i=1;i<=tar;i+=2)
        {
            result+=i;
        }
        cout<<result<<endl;
    }


    return 0;
}

Pascal :

program x_1;
var
  i,t,x,n:integer;
  s:longint;
begin
  readln(t);
  for i:=1 to t do
  begin
    readln(n);
    s:=0;
    x:=1;
    while x<=n do
    begin
      s:=s+x;
      x:=x+2;
    end;
    writeln(s);
  end;
end.

Java :

import java.util.Scanner;
class Main {
	public static void main(String args[]) {
		Scanner reader = new Scanner(System.in);
		int T = reader.nextInt();
		for (int i = 0; i < T; i++) {
			int sum = 0;
			int a = reader.nextInt();
			for (int j = 1; j <=a; j++) {
				if (j % 2 != 0) {
					sum = sum + j;
				}
			}
			System.out.println(sum);
		}
	}
}